Improve conference participant list

[AjobK]

Closes #6440

Jinja participant list to React (Typescript) with QOL improvements

This PR replaces the old Jinja-based participant list with a new React Typescript based one. It is implemented in an existing Jinja template. The change includes QOL improvements, among other fixes that existed in the old table.

For an example, I would like to refer to https://hague.cern.ch/event/5/registrations/participants

(NEW) Participant Lists

(New) Participants Lists Merged

[tomasr8]

So far just a few nitpicks ;) I'll have a look at the rest tomorrow

[AjobK]

As discussed I will extend the scope a little bit more and also change some of the logic around the current ParticipantListAccordion component. This way we essentially reworked the whole page and we won't have to go back to it.

[tomasr8]

One unfortunate thing that happens when we move jinja code to react is that we lose the translations. This is because we have separate PO files for python, js and react which are not shared when searching for translations (e.g. react code only searches in the react PO file).

Maybe at some point we could have a tool that can automatically move the translations from one PO file to another (or merge the PO files? 🤔 ). That would save a lot of time given that we have ~15 official languages and each one needs to be updated every time we make a change like this.

[AjobK]

One unfortunate thing that happens when we move jinja code to react is that we lose the translations. This is because we have separate PO files for python, js and react which are not shared when searching for translations (e.g. react code only searches in the react PO file).

Maybe at some point we could have a tool that can automatically move the translations from one PO file to another (or merge the PO files? 🤔 ). That would save a lot of time given that we have ~15 official languages and each one needs to be updated every time we make a change like this.

I would not mind doing this at some point actually, although I'd have to know how the translations in both kind of correlate. Maybe it could be part of the bundling or something?

If you make an issue with the exact wishes and assign it to me I can get on it after my coming few tasks (or whenever).

[AjobK]

🥳